Machine for trimming metal shells



Nov, 9 1926.

J. A. 300D MACHINE FQR TRIMMING METAL SHELLS Indenion Jfihnflflodol,

3 Sheets-Sheet 1' Filed August 11 Nov. 9 ii zfi 3 Shset's-Sheet 2 Filed August 11, 1925 nd i.

Nov. 9 1926.

' J. A. DODD MACHINE FOR TRIMMING METAL SHELLS 1925 .3 Sheets-Sheet 3 Filed August 1] Patented Nov. 9, 1925.

UNETE STATES assen aren't FFEQE.

JOHN A. DODD, OF CAMDEN, NlTW- JERSEY.

MACHINE FOE 'I RIMMING METAL SHELLS.

' Application filed August 11, 1925. Serial No. 49,662.

to say, for working, in the side walls of metal shells used for salve boxes, bottle and jar caps and the like, beads, threads, knurling and the like, and for simultaneously trimming said shells, the same relating more specifically to that type of machine in which the beads, threads, knurling and the like are formed in the side walls of the shells by a rolling operation.

In my previous application for Letters Patent, filed May 5, 1924, Serial No. 711,117, there is shown and described a machine for beading. threading or knurling the side,

walls of cylindrical metal shells, and for simultaneously trimming the same. In said machine, there is provided an improved form of forming rolls, improved means for feeding the metal shells to the forming rolls, improved means for removing-the formed shells, as well as the scrap trimmed therefrom, from the forming rolls, and improved means for separating the shells from the.

scrap.

My present invention relates to certain improvements in said machine, particularly with reference to such portions thereof as are provided for removing the scrap from the forming and trimming rolls, whereby the efiiciency of the machine will be greatly increased.

The object, therefore, of my present invention is to provide, in a machine of the character aforesaid, improved)- mechanism for removing the scrap from the forming and trimming rolls, which is so constructed and arranged as to positively insure the removal of said scrap, thereby eliminating fouling of the same in the rolls, and thus reducing the stoppages which are required for clearing the rolls, and also permitting increased speed of operation of the machine, thereby increasing the output thereof.

The nature and characteristic features of my invention will be more readily understood from the following description, taken in connection with the accompanying drawings forming part hereof, in which: 4

Figure 1 is a topor plan view of a machine embodying the main features of my present invention; I

Fig. 2 is a front elevation thereof, the supply chute being removed and other parts broken away for the purpose of more clearly illustrating certain other parts of the machine; I

Fig. 3 is a transverse section of the machine, takcn approximately on the line 33 of Fig. 1;

Fig. f is a transverse section, taken approximately on the line 4-4 of Fig. l, certain parts being omitted to illustrate certain details of the mechanism more clearly;

Fig. 5 is an enlarged sectional detail view illustrating the arrangement of the forming and trimming rolls and the associated parts, the same being shown in the operative condition; a

Fig. 6 is a similar view, the forming and trimming rolls, however, being-shown in the separated positions;

Fig. 7 is a vertical section of a portion of the mechanism for removing the scrap, the view being taken approximately on the line 7-7 of Fig. 6; Y

Fig. 8 is a perspective view of a finished shell, illustrating one form of the same which is'adapted to be made upon themachipe arranged as shown in the drawings; ant

Fig. 9 is a similar perspective view of a typical piece of scrap which is trimmed from the shell.

Referring to the drawings,in the particular embodiment of my invention therein shown, is the bed plate upon which the various parts of the machine are mounted, this bed plate being supported by suitable log members- 21. Upon the bed plate 20 there is also mounted an auxiliary bed or framework 22, upon which certain of the parts are mounted. A power shaft 23 is journalled in suitable bearings provided in the auxiliary bed or framework 22. Upon the power shaft 23 are mounted fast and loose pulleys, 24 and 25 respectively. A pinion 26, mounted on and secured to the power shaft 23, meshes with and drives an idler gear 27, which in turn meshes with and drives a gear 28, which is mounted on a cam shaft 29.

Suitable manually controlled clutch mechanism may be employed for the purpose of starting and stopping the cam shaft 29 of the machine as desired,'but asthe particular constructionand arrangement of the same form no essential part of the presentinvention, detailed description of the same is omitted herein, reference being had for such 60 a spindlehl is journalledf Mounted .011V 7 and secured to the spindle 61 .is a gear 62, which meshes with and isdriven'by an idler' or external forming roll 65', whichflisjprovided with an annular groove 66, comple- Letters Patent Serial No. 711,117, wherein suit-able mechanism is shown and described.

A gear 43 is also mounted upon and se-, cured to the power shaft 23, this gear 48 ieshing with and driving a pinion'44,gwhich is mounted on and secured to a hollow spindle 45, which extends through and is jour-- nailed in a portion of the auxiliary bed or framework 22 Upon the front end "of the hollow spindle 45 the lower or internal forming roll '46 'is fixedly secured, this internal forming 'roll, in the form'shown, being provided with a rib 47 for forming the bead 48 in the side wall 49 of the metal box shell 50. Adjacent the forming roll. 46 there is mountel an annular cutter 52. A sleeve 54 is threaded on the hollow spindle 45, and serves to clamp thecutter member52 to theforming roll 46. The hollow spindle 45 is externally threaded adjacent each end of the framework 22 in which the same is journalled, and upon this threaded portion able the hollow spindle 45 to belongitudinah ly adjusted in its journals."

thepower shaft and in this rocking frame gear 63, which in turn meshes with and is driven by a gear 64, which is mountedon and secured, to the power shaft 23. Upon the front end of the spindle fil is the upper mental to the rib 47 on the lower or internal forming roll 46, for the purpose'of rolling the head in the side walls 49 of the metal box shells 50, Adjacent the external forming roll there is mounted; on the SPll'lLllQ 61, a flanged collar 67, upon which an'annular cutter 68' is mounted. The cutting edge of the cutter 68 coacts with the cutting edge of the cutter ter 68 is held adjacent the upper forming roll by means of a sleeve 268, which abuts-f against an enlarged shouldered portion 69 of the spindle 61, which enlarged portiontakes. the thrust against the end of the bearing 111 the rocking frame 60 in which the'spindle 61 is journalled. v

Adjacent the outer face of the upper forming roll 65, there is mounted aflange disc 70, projecting ($5 and adapted j to forming roll for the mounting thereon of a retaining nut 71, which serves to secure the various parts I ournalled in the 5 bed or framework 22, with its arrisof oscillation preferably coincldent with the aXis of' means "of a set screw=101 serves to amtam the roller 99 against the 52 which is mounted ad face of theca'm lOOythereby normally re jacent the lower forming roll 46. The cutf beyond the forming roll" retain the metal box shell in proper position with respect to the during the forming operationj 1 The outer endof the spindlefil is threadedf of the upperforming roll-and cutter to each other, and on the spindle 61.. Washers 72 may, when required, be interposed between the, clamping nut ,71 anl the outer face of the flange disc adjacent the upper form- 7 ing roll 65,so astorpermit forming rolls of various shapes and sizes to be alternatively mounted on (the spindle 61.

The rearward portion of the rocking: frame '60 is bifurcatedifor the mounting of 'a lever arm 'SOjwhichis adjustably; secured thereto 1 by means of a bolt :81 and the provision' of 'a' plurality of-t apertures-82 in the rocking frame" 60,-in=oneof i.- l1icl1 said.bolt 81 is adapted to be selectively placed for the purpose ofiefiecting' the adjustment The outer end of the lever arm 81 carries a roller 83, which rests ona= 'cam 84 which is mounted roller 83 is adjustable in the end-of the lever serving ameans i of fineadjnstment; while p I ftheco'arse adjustment is' provided by means there are mounted adjusting ,nuts 55 to enof the bo'lt" sl aiid' apertiires- 82, .hereinbe- I fore mentionedc The} r roller 83% is held f against the cam 84 by means of a: coil spring 86, Which serves to elevate and i lidld the 'upper forming roll 65*- awayi-zfromz the lower forming roll"46" a't'af'certainiperiod during each revoluti'onof the camfishaft-l29;

is mounted Within the hollow spindle 45,-; ext-ending i therethrough 'and projecting out at-thetrear thereof,and upon the rear end of the ejector rod there are mounted collars .91, between which extends the bifurcated end of-'- an arm 92 which is secured to a slidable'rod- 93. The slidable' rod'93"is' guided iii-suitable brackets 94 and 95 secured to stationary portions of t-he'structure. One end of the slidable rod 93 is provided with a pin 96, which is engaged by the forked end of a lever '97, which lever 97 i'spivoted as-at"98', and-is provided at its otherend with a roller 99, which bears against the face of a cam 100.. The cam 100 is adjustably'secured to the camshaft 29 by A spring 102 tracting the ejector rod 90: to its rear'n'lost position; through the intervening" mechanismabov described;-

: I o a For theipurpose removing the scrap ring which I is cut-'- from the finished shell,

which surrounds the sleevew54 'which is mounted en the hollow} spindle .-behind the cutter -52'-Thesleeve=21'()'fis mounted in a ,yoke 211 in such mannenastobei capable of vertical movement witlrre'spect thereto} The of the flangeseiei {l A 'spring -2l3 serves" to on and securedto the cam shafti29v The tens on 215.

The rocking frame 60, in which the spindle61 of the upper forming roll 65 is jour- .na'lled, has secured thereto an extending arm 216, the outer end of which is adapted,

when the upper forming roll 65 is depressed,

to engage the upward extension of one of the flanges 212 of the sleeve 210, serving to depress the same when the upper forming roll is lowered during the forming and cutt ng operation, as will be hereinafter more fully explained. The yoke 211, in which the sleeve 210 is mounted, is formed at the upper end of a bracket arm 217, the lower end of the bracket arm 217 being secured to one end of aihorizontal slidable rod 113. The other end of the slidable rod 113 is provided with a'pin 1 14, which is engaged by the forked end of a lever 115, which lever 115 is pivoted as at116 and carries a roller 117. The

rollerir illl'bears against the face of a cam side wall 49 of the metalshell 50,'by the forming rolls 46 and 65, the cam shaft 29 continuing to rotate, and the cam 84'be ng 1118, which is mounted on the cam shaft 29 and secured thereto by means of a screw 119. A spring 120 serves to maintain the'roller .117 against the face of the cam 118, thereby '57-) retracting the collar 210 to its rearmost position, through the intervening mechanism above "described.v

' Themeans for supplying and feeding the metal shells to the forming rolls, and for 35 initially positioning the same with respect thereto, forins no part of the present invention Mechanism suitable for such purpose is shown and described in my previous application for Letters Patent, Serial No.

40 711,117,jherein The operation of the machine, as above described, may now be explained. The main shaft 23 being rotated by means of the driving pulley24, the lower hollow spindle will be rotated by means of the gears 43 and 44, and consequently the lower form ng roll 46, which is mounted at the front end of the spindle 45, will be continuously rotated. At the same time, the upper spindle 61 will also be continuously rotated by means of the gears 64, 63, and 62, the gear ratios being 7 such that the upper forming roll 65 will be rotated with substantially the same peripheral speed as that of the lower form ng roll 46. The motion of the power shaft 23 will also 'be transmitted by means of gears 26, 27 and 28 to the cam shaft 29.

One of the metal shells having iniroll 46, and the cam shaft 29 continuing to rotate','the"cam 84 will, through the interthe parts associated therewith, to be lowered to coact with the lower forming roll 46 and the parts associated therewith. The flange member 70 will then engage the outer face of the metal shell 50, which has previously been deposited on the lower forming roll 46, and thereby properly maintain the position of said metal shell between the forming rolls.

As the forming rolls are thus brought into juxtaposition, and as said forming rolls continue to rotate, the rib 47 of the lower forming roll 46, coacting with the annular groove 66 in the upper forming roll, will form the bead 48 in the side wall of the metal shell. Simultaneously with this action, the cutter 52, which is associated with the lower forming roll 46, and the cutter 68, which is associated with the upper forming roll 65, w ll coactat their cutting edges to sever the ring of scrap 251 from the metal shell, thus insuring the trimming of the edge of the shell a uniform distance from the bead which is formed in the side wall thereof.-

After the head 48 has been formed in the so shaped as to permit the rocking frame 60 to be actuated, the' upper spindle 61 and the parts carried thereby will now be raised, this act-ion being accomplished by means of'the coil spring 86 which extends between the end of the lever 80 and the bed plate 20.

moved away from themetal shell'which is mounted on the lower forming roll, and to cause the flangemember 70, which is associated with the upper forming roll 65, to be freed of engagement with the outer face of the shell 50, the cam 100 will then cause the lever 97 to be actuated, thereby longitudinally shiftingthe sl de rod 98 and the forked member 92 carried thereby. As hereinbefore described, the forked member 92 engages the collars 91. on the rear end of the ejector rod 90 which passes through the lower hollow spindle 45. The ejector rod 90 will thus be moved forward, and the front end thereof will encounter the wall of the metal shell and cause the same to be knocked off the lower forming roll 46.

It should be noted, however, that when the rocking frame 60 is in the depressed position, while the forming and cutting rolls are functioning to form the bead in'the shell and simultaneously to trim the same, the arm 216," which is carried by the rocking frame 60, will depress the'slee've 210 in the yoke 211 in which the same is miiunted. 1n mediary gf'the roller 83 and lever arm 80,- f. cause the'rocking frame 60 to be actuated, thereby'causing the upper spindle 61, and consequently the upper forming roll 65"and" clear the upper cutter 68, while at the same time being positioned to receive the scrap ring 251 which is trimmed from the shell. When the rocking frame is subsequently elevated, the arm .216 will be moved to a position to permit the sleeve 210 to be raised by the spring 213, whereupon the projecting portion 215 of the sleeve 210 will positively raise the scrap ring 251 above the lower cutter 52, to prevent the same from fouling with respect thereto. Closely following the action of the ejecting mechanism hereinbefore described, the cam 118 will cause the lever 115 to be actuated, thereby imparting a forward movement to the slide rod 113, upon the forward end of which the bracket arm 21'? is secured. In this manner, the sleeve 210, which is carried in the yoke 211 at the top of the bracket arm 217, will be moved forward over the cutter 52 and lower forming roll 46.

After the sleeve member 210 is thusmoved forward, thering of scrap 251, which, as hereinbefore described, has been trimmed from the metal shell and positioned over the tapered forward end of the sleeve 210, will be carried-forward until thefront end of the tapered extension 215 of the sleeve210 will pass beyond the forming roll 46. The forward movement of the sleeve 210 being arrested, the momentum will carry.the ring of scrap 251 further forward and cause the same to be freed from the extension 215 of the sleeve210, whereupon said ring of scrap will fall downward and be discharged from sleeve 210will thereafter be retracted to the location initially described, to be there positioned during the trimming of the next succeeding shell. f I

It will be seen that, in the machine herein described, there is provided improved mechanism for positively insuring the removal of the ring of scrap which is trimmed from the metal shell, which is so constructed and arranged as to preclude the possibility of the scrap fouling in the rolls and cutters, whereby thestoppages for the purpose of clearing the rolls willbe greatly reduced, and the output of the machine will be greatly increased. I

Having thus described the nature and characteristic features of my present invention, what I claim as new and desire to securc by Letters Patent, is

1. In a machine of the character described, a rotatable internal cutter disc over which a metal shell is adapted to be positioned for the'purpose of trimming the same, a rotatable external cutter disc adapted to coact with said internal cutterdisc when said cutter discs are brought together-to effect the trimming operation, means for bring ing said cutter discs together and: for thereafter separating the same, spindles upon which; said cutter discs are --mounted,'- a;

sleeve surrounding the spindle upon whichi,

the internal cutter disc is mounted, said sleeve having a portion adapted to receive the scrap trimmed from the shell by the cutter discs, means for moving said sleeve forward to carry the scrap over the internal cutterdisc when the cutter discs are separated and meansfor depressing said sleeve when said cutter'jdiscs are brought together.

2. In, a machine of the [character described, a rotatable internal cutter disc over which a metal shell is adapted to be positioned for the purpose of trimming the same, a. rotatable external cutter disc adapted to coact with said internal cutter disc when said cutter discs are brought together to [effect the trimming operation, means for bringing said cutter discs together and for thereafter separating the same, spindles upon which said cutter discs are mounted, a sleeve surrounding the spindle upon which the internal cutter disc is mounted,- said sleeve having a portion adapted to receive the scrap trimmed from the shell by the' cutter discs, said sleeve being} adapted to be moved v forward to carry theii scr ap over the internal ciit t'er disc, means' ffor moving said .sleeveforward, means, for supporting said sleeve ,wherebysthe sameniay. be depressed toclea r the' external cutter disc when said ,cutterd scs arebrought together, and means adapted t o "engage and depress said sleeve .when the cutter discs are brought together. the operative parts of the machine. The

3. In a machinef of the character de scribed, a rotatable internal cutter disc over whicha metal'shell is adapted to be positioned for the purpose of trimming the same, a rotatable external cutter disc adapted to coact :with said internal cutter disc when said cutter discs are brought together to effect the trimming operation, means for bringing saidcutter discs together and for thereafter separating the same, spindles upon which said cutter discs are mounted, a

sleeve surrounding the spindle upon which the internal cutter disc is mounted, said sleeve having a portion adapted to receive the scrap trimmed from the shell 'by the cutter discs; said sleeve being adapted to be moved forward to carry the scrap over the'internal cutter disc, a cam and intervening mechanism for. moving said sleeve forward, means for supporting said sleeve 'wherebythe same may be depressed to clear the external cutter disc. when said cutter discs are brought,togethenand means adapted to engage and depress said sleeve when the cutter discs are brought together.

A. In a machine ofthecharacter described, a rotatableinternal cutter disc over which ,a metaLshell is adaptedcto be positioned for {the purpose of trimming .the same, a rotatable external cutter, dise'adaptedto coact with:saidinternal cutter 'disc when said .cutterj discs-{are brought together, effectthe trimming operation, means for bringing said cutter discs together and for there after separating the same, spindles upon which said cutter discs are mounted, a sleeve surrounding the spindle upon which the internal cutter disc is mounted, said sleeve having a portion adapted to receive the scrap trimmed from the shell by the cutter discs, said sleeve being adapted to be moved forward to carry the scrap over the internal cutter disc, means for moving said sleeve forward, means for supporting said sleeve whereby the same may be depressed to clear the external cutter disc when said cutter discs are brought together, a member in which the spindle for the external cutter disc is journaled, and an arm carried by said member adapted to engage and depress said sleeve when the cutter discs are brought together.

5. In a machine of the character described, a rotatable internal cutter disc over which a metal shell is adapted to be positioned for the purpose of trimming the same, a rotatable external cutter disc adapted to coact with said internal cutter disc when said cutter discs are brought together to effect the trimming operation, means for bringing said cutter discs together and for thereafter separating the same, spindles upon which said cutter discs are mounted, a sleeve surrounding the spindle upon which the internal cutter disc is mounted, said sleeve having a portion adapted to receive the scrap trimmed from the shell by the cutter discs, said sleeve being adapted to be moved forward to carry the scrap over the internal cutter disc, a cam and intervening mechanism for moving said sleeve forward, means for supporting said sleeve whereby the same may be depressed to clear the external cutter disc when said cutter discs are brought together, a member in which the spindle for the external cutter disc is journaled, and an arm carried by said member adapted to engage and depress said sleeve when the cutter discs are brought together.

6. In a machine of the character described, a rotatable internal cutter disc over which a metal shell is adapted to be positioned for the purpose of trimming the same, a rotatable external cutter disc adapted to coact with said internal cutter disc when said cutter discs are brought together to effect the trimming operation, means for bringing said cutter discs together and for thereafter separating the same, a sleeve surrounding the axis of the internal cutter disc, said sleeve having a portion adapted to receive the scrap trimmed from the shell by the cutter discs, means for moving said sleeve forward to carry the scrap over the internal cutter disc when the cutter discs are separated, and means operative when said cutter discs are brought together for shifting said sleeve out of the path of the external cutter disc.

7. In a machine of the character described, a pair of rotatable cutter discs over one of which a metal shell is adapted to be positioned for the purpose of trimming the same, means for bringing said cutter discs together to effect the trimming operation and for thereafter separating the same, a sleeve as sociated with one of said cutter discs and surrounding the axis thereof, said sleeve having a portion adapted to receive the scrap trimmed from the shell by the cutter discs, means for moving said sleeve forward when the cutter discs are separated to carry the scrap over the cutter disc with which said sleeve is associated, and means operative when said cutter discs are brought together for shifting said sleeve transverse to its axis.

8. In a machine of the character described, a rotatable internal cutter disc over which a metal shell is adapted to be positioned for the purpose of trimming the same, a rotatable external cutter disc adapted to coact with said internal cutter disc when said cutter discs are brought together to effect the trimming operation, means for bringing said cutter discs together and for thereafter separating the same, a sleeve surrounding the axis of the internal cutter disc, said sleeve having a portion adapted to receive the scr p trimmed from the shell by the cutter discs, means for moving said sleeve forward to carry the scrap over the internal cutter disc when the cutter discs are separated, and means for depressing said sleeve when said cutter discs are brought together.

In testimony whereof, I have hereunto signed my name.

JOHN A. DODD. 

